What Are Progressive Lenses?
Progressive lenses (also known as PAL – Progressive Addition Lenses) offer smooth vision correction at all distances — near, intermediate, and far — without any visible lines on the lens.

Short History
The first progressive lens was invented in 1959 by Bernard Maitenaz in France, under the Varilux brand. It revolutionized vision correction for presbyopia, replacing lined bifocals with a more natural, seamless viewing experience.

Advantages

• No visible lines — more stylish and modern
• Smooth transition between all viewing distances
• One pair of glasses for reading, computer, and distance
• Custom-made to fit your lifestyle and frame type

Disadvantages

• Short adaptation period (usually a few days to weeks)
• Peripheral blur at the edges, especially in lower-cost lenses
• Higher price than single vision or lined bifocal lenses

Example Vision Zones
(A diagram typically shows three zones in the lens: distance on top, intermediate in the middle, and near at the bottom. You may include an image in this section on your site.)

Summary
Progressive lenses are the modern solution for people who need correction for both distance and near vision. They offer comfort, convenience, and a clean, line-free appearance — ideal for everyday wear.